[SOLVED] In a Liferay theme, what is the difference between 'clay/base' and 'clay/atlas'

In a Liferay theme, what is the difference between 'clay/base' and 'clay/atlas'

I am starting to develop Liferay themes and the documentation seems to show that you should import 'clay/atlas'.

I have an import for 'clay/base' instead:

@import 'clay/base';

Can someone shed some light on what the difference is and why I would use one instead of the other?

I saw this question How to implement Clay in Liferay 7.2, but it didn't help (in fact it confused me more).

Thanks for your time.

Solution

After digging in deeper I think I've figured it out.

Both are what Liferay calls "sub-themes".

clay/base is the "Base" sub-theme, which is the base implementation of Clay. Clay is an extension of Bootstrap, and implements Liferay's Lexicon design language.

clay/atlas is the "Atlas" sub-theme, which is an enhancement of Clay and Bootstrap to provide the equivalent of a Bootstrap theme and is used to produce the look and feel of the "Classic" Liferay theme.

This is a summary of various pieces of information found in the Liferay documentation.